Colton Parayko is still available. He consistently rates high
2020:
https://forum.calgarypuck.com/showthread.php?t=179592 9th-14th highest rated dman with 75 overall
2019:
https://forum.calgarypuck.com/showthread.php?t=174753 15th-22nd highest rated dman with 74 overall
2018:
https://forum.calgarypuck.com/showthread.php?t=169033 21st-32nd highest rated dman with 75 overall
He is an RFA and thus you will get a friendlier 3 year deal here for a guy who can play on your top pairing easily
Open to options here